It's been a while since I've had one of these to offer.
The little green men are scouring the solar system, but these aren't all that common.
There is a page on my web site of pictures done with a 4 inch one of these. They are really fun to get creative with!
The glass on these is almost never perfect. But this one is excellent - and will serve you well with it's flaws.
Buyers beware. F3 is really fast! You need a speed graphic with curtain shutter to use this easily. It won't quite cover 4X5 at infinity, which is what you want. The barrel is OK if you want to use it, but I find it easier to simply mount the inner core in a board and have at it.
Price: $125 + shipping